package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    //1.1新增员工
    @Override
    public void insert(EmployeeDTO employeeDTO) {
        Employee emp = new Employee();
        //拷贝属性
        BeanUtils.copyProperties(employeeDTO,emp);
        //设置账号默认密码---md5加密
        emp.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置账号默认状态为1
        emp.setStatus(StatusConstant.ENABLE);
        //设置创建时间和修改时间
//        emp.setCreateTime(LocalDateTime.now());
//        emp.setUpdateTime(LocalDateTime.now());
        //设置创建人和修改人
//        emp.setCreateUser(BaseContext.getCurrentId());
//        emp.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(emp);
    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult select(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.select(employeePageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 启用,禁用员工账号
     * @param status
     * @param id
     */
    @Override
    public void setStatus(Integer status, Long id) {
        Employee build = Employee.builder().id(id).status(status).build();
        employeeMapper.update(build);
    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee selectById(Long id) {
        Employee employee = employeeMapper.selectBuyId(id);
        return employee;
    }

    /**
     * 编辑员工信息
     * @param employeeDTO
     * @return
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }

    /**
     * 修改密码
     * @param passwordEditDTO
     * @return
     */
    @Override
    public void setPassword(PasswordEditDTO passwordEditDTO) {
        //查询密码
        Employee employee = employeeMapper.selectBuyId(BaseContext.getCurrentId());
        //将旧密码转为MD5格式
        String passwordOld = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        //先判断密码是否正确
        if (passwordOld.equals(employee.getPassword()) && passwordEditDTO.getNewPassword().length() >= 6){
            //将密码转为MD5
            passwordEditDTO.setNewPassword(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes()));
            //修改密码
            employeeMapper.setPassword(passwordEditDTO);
        }else {
            throw new PasswordErrorException(MessageConstant.PASSWORD_EDIT_FAILED);
        }
    }
}
